package com.atguigu.gulimall.order.service.impl;

import com.atguigu.gulimall.order.dao.OrderItemDao;
import com.atguigu.gulimall.order.entity.OrderEntity;
import com.atguigu.gulimall.order.entity.OrderItemEntity;
import com.atguigu.gulimall.order.entity.OrderReturnReasonEntity;
import com.atguigu.gulimall.order.service.OrderItemService;
import com.rabbitmq.client.Channel;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.core.MessageProperties;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.Map;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

@RabbitListener(queues = {"hello-java-queue"})
@Service("orderItemService")
public class OrderItemServiceImpl extends ServiceImpl<OrderItemDao, OrderItemEntity> implements OrderItemService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<OrderItemEntity> page = this.page(
                new Query<OrderItemEntity>().getPage(params),
                new QueryWrapper<OrderItemEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * queues:声明需要监听的所有队列
     *
     * org.springframework.amqp.core.Message;
     *
     * 参数可以写以下类型：
     * 1.Message message：原生消息详细信息。头+体
     * 2.T<发送的消息的类型>   OrderReturnReasonEntity content
     * 3.Channel channel: 当前传输数据的通道
     *
     * Queue:可以很多人都来监听。只要收到消息，队列删除消息，而且只能有一个收到此消息
     * 场景：
     *    1）订单服务启动多个；同一个消息，只能有一个客户端收到
     *    2）只有一个消息完全处理完，方法运行结束，我们就可以接收到下一个消息
     */
    // @RabbitListener(queues = {"hello-java-queue"})
    @RabbitHandler
    public void recieveMessage(Message message,
                               OrderReturnReasonEntity content,
                               Channel channel) throws InterruptedException, IOException {
        System.out.println("接收到消息。。。"+content);
        byte[]body=message.getBody();
        // 消息头属性信息
        MessageProperties properties=message.getMessageProperties();
        System.out.println("消息处理完成=》："+content.getName());

        //通道内，按顺序自增
        long deliveryTag = message.getMessageProperties().getDeliveryTag();
        System.out.println("deliveryTag=》"+deliveryTag);

        //签收消息(参数2-》是否批量签收)
        try {
            if (deliveryTag%2==0){
                // 收货
                channel.basicAck(deliveryTag,false);
                System.out.println("签收了货物..."+deliveryTag);
            }else {
                //这个支持批量退货 参数二：是否批量  参数三：是否重新入队
                channel.basicNack(deliveryTag,false,false);
                // channel.basicReject(deliveryTag,false);
                System.out.println("没有签收货物..."+deliveryTag);
            }
        }catch (Exception e){
            // 网络中断

        }
    }

    @RabbitHandler
    public void recieveMessage2(OrderEntity content) throws InterruptedException {
        System.out.println("接收到消息。。。"+content);
    }
}